NPR's Richard Harris reports that psychology professor Marc Breedlove at UC Berkeley xeroxed the hands of 720 people in order to compare the length difference between the index and the ring fingers. On most women, there is little difference, but on men, the ring finger is longer. Breedlove's survey found that lesbians have more of a male finger-length ratio on their right hands. His findings also suggest that men with more than one older brother were more likely to have shorter index fingers. Breedlove's study isn't being received warmly.